Contents
The implementation of an operating system either in an existing IT environment or as a completely new rollout must be carefully prepared. With SUSE Linux Enterprise 10, get a variety of new features. It is impossible to describe all the new features here. The following is just a list of major enhancements that might be of interest.
Runs many virtual machines on a single server, each with its own instance of an operating system. For more information about this technology, see the virtualization manual on http://www.novell.com/documentation/sles10/index.html.
Several new configuration options have been developed for YaST. These are normally described in the chapters about the technology involved.
The Common Information Model Object Manager (CIMON) is a Web-based enterprise management utility. It provides a mature management framework. See also Chapter 11, OpenWBEM.
The management utility SPident gives an overview of the installed software base and clarifies the current service pack level of the system.
Several LDAP-compliant directory services are available:
Microsoft Active Directory
OpenLDAP
Harden your System with the Novell AppArmor technology. This service is described in depth in Novell AppArmor Administration Guide (↑Novell AppArmor Administration Guide).
iSCSI provides an easy and reasonably inexpensive solution for connecting Linux computers to central storage systems. Find more information about iSCSI in Chapter 12, Mass Storage over IP Networks—iSCSI .
Starting with version 10, SUSE Linux Enterprise supports NFS also in version 4. This gives you performance improvements, strong security, and a “stateful” protocol. See also Chapter 38, Sharing File Systems with NFS.
OCFS2 is a general-purpose journaling file system that is fully integrated in the Linux 2.6 kernel and later. Find an overview of OCFS2 in Chapter 14, Oracle Cluster File System 2.
Heartbeat 2 provides a cluster membership and messaging infrastructure. The setup of such a cluster is described in the Heartbeat Guide.
Device mapping multipath IO features automatic configuration of the subsystem for a large variety of setups. For details, see the chapter about multipath I/O in Storage Administration Guide.
Debugging kernel-related problems is now much more comfortable when using Kexec and Kdump. This technology is available on x86, AMD64, Intel 64, and POWER platforms.
At the beginning of the planning process, you should try to define the project goals and needed features. This must be done individually for each project, but the questions to answer should include the following:
How many installations should be done? Depending on this, the best deployment method differs. See also Chapter 2, Deployment Strategies.
Will the system be in a hostile environment? Have a look at Chapter 49, Security and Confidentiality to get an overview of consequences.
How will you get regular updates? All patches are provided online for registered users. Find the registration and patch support database at http://support.novell.com/patches.html.
Do you need help for your local installation? Novell provides training, support, and consulting for all topics around SUSE Linux Enterprise. Find more information about this at http://www.novell.com/products/server/.
Do you need third-party products? Make sure that the required product is also supported on the desired platform. Novell can also provide help to port software to different platforms when needed.
To make sure that your system will run flawlessly, always try to use certified hardware. The hardware certification process is an ongoing process and the database of certified hardware is updated regularly. Find the search form for certified hardware at http://developer.novell.com/yessearch/Search.jsp.
Depending on the number of desired installations, it is beneficial to use installation servers or even completely automatic installations. Have a look at Chapter 2, Deployment Strategies for more information. When using the Xen virtualization technologies, network root file systems or network storage solutions like iSCSI should be considered. See also Chapter 12, Mass Storage over IP Networks—iSCSI .
SUSE Linux Enterprise provides you with a broad variety of services. Find an overview of the documentation in this book in About This Guide. Most of the needed configurations can be made with YaST, the SUSE configuration utility. In addition to that, many manual configurations are described in the corresponding chapters.
In addition to the plain software installation, you should consider training the end users of the systems as well as help desk staff.
The SUSE Linux Enterprise operating system is a well-tested and stable system. Unfortunately, this does not prevent hardware failures or other causes for downtime or data loss. For any serious computing task where data loss could occur, a regular backup should be done.
For optimal security and safe work, you should make regular updates of all the operated machines. If you have a mission critical server, you should probably run a second identical machine where you can apply all changes for testing purposes before doing so on the real system. This also gives you the possibility to switch machines in case of hardware failure.